Top roll mounting means for spinning machines



J1me 1966 ICHISABURO KAINO 3,256,570

TOP ROLL MOUNTING MEANS FOR SPINNING MACHINES Filed Aug. 10, 1962 5 Sheets-Sheet 1 I WW m J L U J Q lTvrenfar -Za/m/usuR AA W? W June 1966 ICHISABURO KAINO 3,

TOP ROLL MOUNTING MEANS FOR SPINNING MACHINES Filed Aug. 10, 1962 3 Sheets-Sheet 2 J1me 1966 ICHISABURO KAINO TOP ROLL MOUNTING MEANS FOR SPINNING MACHINES 3 Sheets-Sheet 5 Filed Aug. 10, 1962 L W B m w I 3,256,570 TOP ROLL MOUNTING MEANS FOR SPINNING MACHINES Ichisaburo Kaine, Neyagawa-shi, Osaka-Eu, Japan, as-

signor t Nitto Boseki Co. Ltd., Fukushima-ken, Japan, and O-M Ltd., Osaka-shi, Japan 7 Filed Aug. 10, 1962, Ser. No. 216,209 2 Llaims. (Cl. 19-295) This invention relates to a textile drafting mechanism comprising magnetic top rolls, which enables the top rolls to keep in touch with the bottom rolls by means of the formers magnetic attraction.

On the conventional textile draftin-gmechanism, the top and bottom rolls were arranged to be held against each other by means of a spring or of a weight loaded on each top roll gudgeon. Such spring and weight, however, have often given rise to a difficulty to adjust holding pressure between the top and bottom rolls, leading thus to inconveniences to handle the mechanism and failing to secure a constant accuracy of holding pressure by the rolls. In view of such a disadvantage, the top rolls are made of magnetic material these days, and they are arranged to rotate in touch with the bottom rolls by means of their magnetism. However, this method has such a disadvantage that the .top rolls cannot be easily fitted and taken away from the bottom rolls, because they are apt to be attracted by their magnetism to the capbar fingers or other parts of the mechanism during such operation. In addition, a strong force is required to take the top rolls off the bottom rolls, because they stick fast to each other due to magnetism, and this disturbs the fitting and removing the rolls. Each of the rolls being by an individual cap-bar finger, such arrangement makes it more troublesome to handle the rolls.

In view of such disadvantages, this invention enables the magnetic top rolls to be easily fitted and removed from the bottom rolls, ensuring thus easier operation and handling of the rolls.

Further features and advantages of the invention will be apparent from the following description of the accompanying drawings, of twhich:

FIGURE 1 is a side view of a textile drafting mechanism incorporating the invention;

FIGURE 2 is a plan view of the mechanism illustrated in FIGURE 1;

FIGURE 3 is an isometric view of the cap-bar fingers;

FIGURE 4 is a sectional view of the mechanism illustrated in FIGURE 1 as viewed from the rear;

FIGURE 5 is an enlarged fragmentary isometric view of the holder;

FIGURE 6 is a side View of a cap bar including the v holder illustrated in FIGURE 5.

With more particular reference to the drawing, FIG- URES 1 through 4 show the mechanism of the present invention which has a cap-bar finger 1 of non-magnetic material, the cap-bar fingers on both sides are connected with each other in a body, and each of the gudgeons 5 6 and 7 of the. top rolls 5, 6 and 7 has been arranged to fit respectively into the grooves 2, 3 and 4 on the capbar fingers.

The cap-bar finger 1 of non-magnetic material is fixed at its base to a support bar 8 of the mechanism, and each of these fingers is set on left and right sides of the mechanism. The cap-bar fingers 1 and 1 on both sides of the mechanism are connected at their front ends by means of a lever 9. When the lever 9 is raised, therefore, both cap-bar fingers 1 and 1 will be lifted simultaneously, as the support 8 works as'a fulcrum.

The grooves 2, 2, 3, 3, 4 and 4' on the cap-bar fingers 1 and 1 are arranged with a different depth respectively.

Y nited States Patent 0 mam Patented June 21, 1966 ice When the roll gudgeons 5', 6' and 7' are fitted into the grooves 2, 2', 3, 3', 4 and 4 to have the top rolls 5, 6 and 7 come into contact with the bottom rolls 10, 11

and 12 respectively, spaces 1 .1 1 1 1 and 1 between the gudgeons 5', 6 and 7 of the top rolls 5, 6 and 7 and the bottoms of the grooves 2, 2, 3, 4 and 4"are arranged to be different from each other. The above spaces 1 1 and 1 and 1 1 and 1 are arranged to be gradually wider than the other, for the front top 5, second top 6 and back top 7 rolls in that order. Such spaces provided on the left and right sides of the mechanism are set also to be different from each other by having made any of these corresponding sides somewhat larger than the other (see 1 1 1 1 1 and 1 in FIGURE 4). Consequently, when the cap-bar fingers 1 and 1 are raised, with the handle 9 to take the top rolls 5, 6 and 7 off the bottom rolls 10, 11 and 12, the front top roll 5 will first be detached from the bottom roll 10, then the second top roll 6 will be detached from the second bottom roll 11 and finally the back top roll 7 will be detached from the back bot-tom roll 12 in that order. In this case, when each of the top rolls 5, 6 and 7 is detached from each of the bottom rolls 10, 1:1 and 12, one end of the roll will be raised, leaning on one side, then the other end of the roll will be raised, and finally the rolls will be raised all alike, enabling them to be taken away from the mechanism, because of the respective difference between the spaces of 1 and 1 1 and 1 and 1 and 1 as mentioned above. Thus, this invention enables the top rolls 5, 6 and 7, which conventionally have stuck fast to the bottom rolls due to magnetism, to be lightly taken off the mechanism.

Each of the grooves 2, 3 and 4 is cut and chamfered (a, b) at its opening to prevent the roll gudgeons 5, 6' and 7' from slipping out of positions in .the grooves. The lever 9 connecting the right-hand capabar finger 1 (according to the view of FIGURE 4) with the left-hand cap-bar finger 1 is secured to the ends of the cap bars 1 and 1' by means of bolts 13 and 13. This lever works as a handle when the cap-bar fingers are lifted and lowered. The lever 9 will also serve as a holder of the clearer (not shown).

A guide block 14 is fitted in each of the grooves 2, 3 and 4 as shown in FIGS. 5 and 6 in order to adjust the positions of the top rolls 5, 6 and 7. The block 14 is made narrower in width than the grooves 2, 3 and 4 so that it can shift in the grooves respectively. The guide block 14 has a hanging plate 14 whereupon a stud bolt 16 is provided. The stud bolt 16 is movable transversely within a slot 15 which is provided on the side of the cap bar finger 1. The position of the guide block-14 can be adjusted by fixing the stud bolt 16 at any desired position in said slot 15. The gudgeons 5, 6' and 7 of the top rolls 5, -6 and 7 are fitted respectively into the guide blocks.

On the conventional drafting mechanism, manual handling is required to take the top rolls off the bottom rolls one by one, because of its arrangement of the vertical grooves on the cap bar fingers. rendered us much trouble and difiiculty in handling the rolls, because the top rolls had often stuck to each other or to the bottom rolls due to magnetism.

The conventional drafting mechanism has also such a disadvantage that the top rolls could not be taken away from the bottom rolls easily, because of their strong magnetism working on the rolls.

In view of such disadvantages, improvement has been given in this invention in the following ways:

The cap-bar finger '1 is designed to be made of nonmagnetic material as mentioned above. The fingers 1 and 1 on both sides of the mechanism are arranged to be connected with each other and each of the capbar Thus, such mechanism fingers are designed to have several grooves 2, 3 and 4, each of 'which is made to fit respectively the gudgeons 6' and 7' of the top rolls 5, 6 and 7. Thus, these arrangements make it easy to take the top rolls 5, 6 and 7 off the bottom rolls 10, 1 1 and 12 by a simple action of lifting the cap-bar fingers 1 and 1. The cap-bar fingers 1 and 1' on both sides being non-magnetic as mentioned above, the top rolls 5, 6 and 7 will not stick fast to the cap-bar fingers 1 and 1 when they are taken off the bottom rolls. This makes it easy to handle the mechanism.

In my present invention, the cap-bar fingers '1 and 1 on both sides of the mechanism are designed to have the grooves 2, 3 and 4 thereon. When such grooves have a different depth respectively, therefore, the top rolls can be lifted one by one in order. As the top rolls can be lifted leaning on one side after another, they can be easily taken off the bottom rolls 10, 1'1 and 12. If an arrangement has been made in advance to have the top rolls 5, 6 and 7 fit into the grooves 2, 3 and 4, a simple action of lowering the cap-bar fingers 1 and 1' will enable the top rolls-to come in touch accurately with the bottom rolls 10, 11 and 12. While a preferred embodiment of the invention has been disclosed, the description is intended to be illustrative only, and it is to be understood that changes and variations may be made without departing from the spirit or scope of the invention as defined by the appended claims.

I claim:

1. A roll assembly for spinning machines, comprising, in combination:

(a) a bottom roll holder;

(b) a plurality of bottom rolls in said bottom roll holder;

(c) a plurality of top rolls having gudgeons by which they may be held, said top and bottom rolls including cooperating magnetic means for applying pressure between the top and bottom rolls; and

((1) means for holding said top rolls, said means being mounted for movement between a roll pressure applying position in which the top rolls engage the bottom rolls and a rest position in which the top rolls are out of contact with said bottom rolls, said means including two spaced cap bars having at least two sets of aligned slots for accommodating the gudgeons of the top rolls, each slot of each set of aligned slots having a depth such that there are spaces between the top .roll necks and the slot bottoms when the holding means is in roll pressure applying position, for each said set, the spaces between the roll gudgeons and their respective slot theing unequal so that when the holding means is moved out of roll pressure applying position one end of a top roll will be raised before the other end thereof, the spaces betwen the roll gudgeons and their respective slot bottoms for each set of slots being different in size from the spaces between the roll gudgeons and their respective slot bottoms for the other of said sets of slots so that when the holding means is moved out of roll pressure applying position one top roll .will be raised before the other. 2. The improvement defined in claim 1 wherein said holding means is mounted for upward pivotal movement from the roll pressure applying position.

References Cited by the Examiner UNITED STATES PATENTS 1,396,122 11/1921 Johnson 1,678,039 7/1928 Garey 19-294 X 2,686,940 8/ 1954 Burnham 1927 3,079,646 3/ 1963 Burnham 19272 FOREIGN PATENTS 899,012 7/1944 France.

906,029 5/ 1945 France.

309,779 4/ 1929 Great Britain.

564,994 7/ 1957 'Italy.

ROBERT R. MACKEY, Acting Primary Examiner.

DONALD W. PA'RK'ER, Examiner.

D. NEWTON, Assistant Examiner. 

1. A ROLL ASSEMBLY FOR SPINNING MACHINES, COMPRISING, IN COMBINATION; (A) A BOTTOM ROLL HOLDER; (B) A PLURALITY OF BOTTOM ROLLS IN SAID BOTTOM ROLL HOLDER; (C) A PLURALITY OF TOP ROLLS HAVING GUDGEONS BY WHICH THEY MAY BE HELD, SAID TOP AND BOTTOM ROLLS INCLUDING COOPERATING MAGNETIC MEANS FOR APPLYING PRESSURE BETWEEN THE TOP AND BOTTOM ROLLS; AND (D) MEANS FOR HOLDING SAID TOP ROLLS, SAID MEANS BEING MOUNTED FOR MOVEMENT BETWEEN A ROLL PRESSURE APPLYING POSITION IN WHICH THE TOP ROLLS ENGAGE THE BOTTOM ROLLS AND A REST POSITION IN WHICH THE TOP ROLLS ARE OUT OF CONTACT WITH SAID BOTTOM ROLLS, SAID MEANS INCLUDING TWO SPACED CAP BARS HAVING AT LEAST TWO SETS OF ALIGNED SLOTS FOR ACCOMMODATING THE GUDGEONS OF THE TOP ROLLS, EACH ROLLS OF EACH SET OF ALIGNED SLOTS HAVING A DEPTH SUCH THAT THERE ARE SPACES BETWEEN THE TOP ROLL NECKS AND THE SLOT BOTTOMS WHEN THE HOLDING MEANS IS IN ROLL PRESSURE 